Levodopa or L-Dopa is a chemical building-block that converts into a dopamine in body.
Dopamine is the chemical messenger released in brain. It mediates pleasure, cognition,
and memory functions. Nearly all patients receive the dopamine precursor levodopa,
which adequately control symptoms of Parkinson's disease (PD) at early stage of the
disease. Carbidopa is often included with levodopa-containing drugs in order to boost
its efficacy by slowing down the metabolism of dopamine.